Reland "Record pdf page count metrics"

This is a reland of commit 3df33ef0b86e5f7a3030b61a382582f712f7afdc

Original change's description:
> Record pdf page count metrics
>
> ukm review doc:
> http://docs/document/d/1LhnQ-2KDDdJMZ6eLieNr2EVlW1SP0ArhBfDFjUcCT0A
>
> Change-Id: Ibdbacc6894102e46abdc5086a47fb998a428d54a
> Bug: 391695577
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6199521
> Reviewed-by: Khushal Sagar <khushalsagar@chromium.org>
> Commit-Queue: Raj T <rajendrant@chromium.org>
> Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1414543}

Bug: 391695577
Change-Id: I0437e3a710b2e349a6464abecf16bedb1c60676a
Cq-Include-Trybots: luci.chromium.try:linux_chromium_asan_rel_ng,linux_chromium_chromeos_asan_rel_ng,linux-chromeos-asan-rel,linux_chromium_chromeos_msan_rel_ng,linux_chromium_msan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6228402
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Raj T <rajendrant@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1415660}
3 files changed
tree: 5a1c6d06541675b382543182cc3f2685196d621b
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. codelabs/
  13. components/
  14. content/
  15. crypto/
  16. dbus/
  17. device/
  18. docs/
  19. extensions/
  20. fuchsia_web/
  21. gin/
  22. google_apis/
  23. gpu/
  24. headless/
  25. infra/
  26. ios/
  27. ipc/
  28. media/
  29. mojo/
  30. native_client_sdk/
  31. net/
  32. pdf/
  33. ppapi/
  34. printing/
  35. remoting/
  36. rlz/
  37. sandbox/
  38. services/
  39. skia/
  40. sql/
  41. storage/
  42. styleguide/
  43. testing/
  44. third_party/
  45. tools/
  46. ui/
  47. url/
  48. webkit/
  49. .clang-format
  50. .clang-tidy
  51. .clangd
  52. .git-blame-ignore-revs
  53. .gitallowed
  54. .gitattributes
  55. .gitignore
  56. .gitmodules
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython3
  61. .yapfignore
  62. ATL_OWNERS
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. CPPLINT.cfg
  68. CRYPTO_OWNERS
  69. DEPS
  70. DIR_METADATA
  71. LICENSE
  72. LICENSE.chromium_os
  73. OWNERS
  74. PRESUBMIT.py
  75. PRESUBMIT_test.py
  76. PRESUBMIT_test_mocks.py
  77. README.md
  78. WATCHLISTS
README.md

Logo Chromium

Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.

The project's web site is https://www.chromium.org.

To check out the source code locally, don't use git clone! Instead, follow the instructions on how to get the code.

Documentation in the source is rooted in docs/README.md.

Learn how to Get Around the Chromium Source Code Directory Structure.

For historical reasons, there are some small top level directories. Now the guidance is that new top level directories are for product (e.g. Chrome, Android WebView, Ash). Even if these products have multiple executables, the code should be in subdirectories of the product.

If you found a bug, please file it at https://crbug.com/new.